Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High frequency composite switch module

a high-frequency composite switch and switch module technology, applied in the direction of filter, waveguide type device, semiconductor/solid-state device details, etc., can solve the problems of loss of signal on the board and reduce the receiving sensitivity of the communication device, so as to improve the attenuation characteristic

Inactive Publication Date: 2005-02-15
PANASONIC CORP
View PDF14 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The patent describes a radio frequency (RF) hybrid switch module that includes an antenna duplexer and a surface acoustic wave (SAW) filter integrated therein. The module reduces parasitic inductance and improves attenuation at lower frequencies. The module includes a dividing circuit, a switching circuit, a low pass filter, and an electrode pattern. The electrode pattern is formed on at least one of the dielectric layers of a laminated body. The technical effect of this invention is to improve the performance of the RF hybrid switch module and enhance the attenuation characteristic of the SAW filter."

Problems solved by technology

This creates a loss of the signal on the board, thus reducing a receiving sensitivity of the communication device.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High frequency composite switch module
  • High frequency composite switch module
  • High frequency composite switch module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

h the embodiment.

[0020]FIG. 8 is a plan view showing a mounting condition and a terminal arrangement of the RF switch module in accordance with the embodiment.

[0021]FIG. 9 is a plan view showing a mounting condition and a terminal arrangement of the RF switch module in accordance with the embodiment.

[0022]FIG. 10 shows an internal structure of the RF switch module in accordance with the embodiment.

[0023]FIG. 11 is a circuit block diagram of a conventional RF component.

[0024]FIG. 12 is the conventional RF component mounted on a board.

DESCRIPTION OF THE PREFERRED EMBODIMENT

[0025]FIG. 1 is a circuit block diagram of a radio frequency (RF) hybrid switch module in accordance with an exemplary embodiment of the present invention. The RF hybrid switch module is formed of a circuit shown in FIG. 1 and formed as a one-chip module. The module corresponds two frequency bands (e.g. a GSM band as a first frequency band and a DCS band as a second frequency band), and can be used for dividing a re...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A radio frequency (RF) hybrid switch module includes an antenna duplexer integrated with a surface acoustic wave (SAW) filter used in a mobile communication device such as a cellular phone. The switch module handles a transmitted signal and received signal of different frequency bands. A parasitic inductance due to a mounting of the SAW filter is reduced, so that an attenuation characteristic at a low frequency of the SAW filter is improved. The RF hybrid switch module includes: a dividing circuit; a switching circuit; a low pass filter (LPF); an electrode for forming at least a portion of the dividing circuit, switching circuit, and the LPF; a laminated body including a dielectric layer having the electrode formed thereon; a SAW filter which is mounted on the laminated body, corresponds to plural frequency bands, and has a grounding port; a diode mounted on the laminated body for forming a portion the switching circuit, a grounding electrode formed in the laminated body, and a via-conductor directly connecting the grounding port of the SAW filter.

Description

[0002]THIS APPLICATION IS A U.S. NATIONAL PHASE APPLICATION OF PCT INTERNATIONAL APPLICATION PCT / JP01 / 08793.TECHNICAL FIELD[0003]The present invention relates to a radio frequency (RF) hybrid switch module used in a mobile communication device such as a cellular phone.BACKGROUND ART[0004]A small, high-efficiency dividing circuit and antenna duplexer used in a mobile communication device such as a cellular phone have been recently demanded. A conventional circuit block diagram of a radio frequency (RF) component such as the mobile communication device is shown in FIG. 11. FIG. 11 shows an antenna duplexer in a composite terminal for a GSM system at 900 MHz band, which is used at a cellular phone in Europe, and a DCS system at 1.8 GHz band.[0005]As shown in FIG. 11, the RF component includes antenna port 61, transmitting ports 62, 64, receiving ports 63, 65, control terminals 66, 67, dividing circuit 68, switching circuits 69, 70 and low pass filters 71, 78. Dividing circuit 68, bein...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): H03H9/00H03H9/72H04B1/44H04B1/48H01L23/12H01L25/00H03H7/46H03H9/25
CPCH03H7/465H03H9/02952H03H9/0538H04B1/48H03H9/72H03H9/725H03H9/0576H03H2250/00
Inventor TSURUNARI, TETSUYASATOH, YUKIOMORI, YOSHIHARU
Owner PANASONIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com